The free vibration characteristics of a composite marine propeller blade were studied. MAB and composite materials were used. Composites with symmetric, balanced and unbalanced stacking sequences were analyzed. Rotational effects and added mass were considered using the finite element method. The natural frequency of the blade in water was much lower than in air. The mode shapes of the blade are almost the same in air as in water. The anisotropy of the composites shift the contours of the mode shape. Generally, greater anisotropy corresponds to a lower natural frequency. The rotational effects can be ignored because the marine propeller rotates slowly.
Taylor, D.W. (1933). The Speed and Power of Ships, Ransdell, Washington.
2.
Cohen, J.W. (1955). On Stress Calculations in Helicoidal Shells and Propeller Blades, Netherlands Research Center, T. N. O. Shipbuilding and Navigation, Delft Report 21S.
3.
Conolly, J.E. (1974). Strength of Propeller , Trans RINA, 103: 139—204.
4.
Genalis, P. (1970). Elastic Strength of Propellers —An Analysis by Matrix Methods. Ph.D. Thesis, University of Michigan , USA.
5.
Atkinson, P. (1968). On the Choice of Method for the Calculation of Stress in Marine Propeller, Trans RINA , 110: 447—463.
6.
Ma, J.H. (1974). Stresses in Marine Propellers , Journal of Ship Research, 18: 252—264.
7.
Sontvedt, T. (1974). Propeller Blade Stresses —Application of Finite Element Methods, Computers & Structures, 4(1): 193—204.
8.
Atkinson, P. and Glover, E.J. (1988). Propeller Hydroelastic Effects, SNAME on the Propeller'88 Symposium No.21, Jersey, NJ.
9.
Lin, H.J. and Lin, J.J. (1996). Nonlinear Hydroelastic Behavior of Propellers using a Finite-element Method and Lifting Surface Theory , Journal of Marine Science and Technology , 1: 114—124.
10.
Bathe, K.J. and Ramm, E. (1975). Finite Element Formulations for Large Deformation Dynamic Analysis, International Journal for Numerical Methods in Engineering, 9(2): 353—386.
11.
Chang, T.Y. and Sawamiphakdi , K. (1980). Large Deformation Analysis of Laminated Shell by Finite Element Method, Computers & Structures, 13(1): 331—340.
12.
Zienkiewicz, O.C. (1991). The Finite Element Method, 4th edn, McGraw-Hill , London.
13.
Bathe, K.J. and Bolourchi, S. (1979). Geometrical and Material Nonlinear Plate and Shell Element, Computers & Structures , 11(2): 23—48.
14.
Omprakash, V. and Ramamurti, V. (1989). Dynamic Stress Analysis of Rotating Turbo-machinery Blade-disk System, Computers & Structures, 32(2): 477—488.
15.
Dokainish, M.A. and Rawtani, S. (1971). Vibration Analysis of Rotating Cantilever Plates, International Journal for Numerical Methods in Engineering, 3(2): 233—248.
16.
Bossak, M.A.J. and Zienkiewicz, O.C. (1973). Free Vibration of Initially Stressed Solid with Particular Reference to Centrifugal Force Effects in Rotating Machinery, Journal of Strain Analysis , 8(4): 245—252.
17.
Vorus, W.S. and Hylarides, S. (1982). Hydrodynamic Added-mass Matrix of Vibrating Ship Based on a Distribution of Hull Surface Source, Trans. SNAME, 89: 397—416.
18.
Jennings, A. (1985). Added Mass for Fluid-structure Vibration Problems, International Journal for Numerical Methods in Fluids, 5(9): 817—830.
19.
Hess, J.L. and Smith, A.M. (1964). Calculation of Non-lifting Potential Flow about Arbitrary Three Dimensional Bodies, Journal of Ship Research , 8(2): 22—44.
